[Python-Dev] RE: PEP 285: Adding a bool type

[Martin v. Loewis]

Guido van Rossum <guido at python.org> writes:

> > Interestingly enough, the exception message says "__nonzero__ should
> > return an int" but really means "__nonzero__ must return an int".
> 
> You've been staring at standards too much, haven't you?  The
> difference between MUST and SHOULD isn't as clear-cut as most
> standards people use them.

Given Andrew's remark, it really should be "__nonzero__ shall return
an in int" :-)

Regards,
Martin